基于TN901的红外测温原理图

12345678910111213141516U11602LCDP1.01P1.12P1.23P1.34P1.45P1.56P1.67P1.78REST9P3.0/RXD10P3.1/TXD11P3.2/INT012P3.3/INT113P3.4/T014P3.5/T115P3.6/WR16P3.7/RD17XTAL218XTAL119GND20P2.021P2.122P2.223P2.324P2.425P2.526P2.728SPEN29ALE30EA31P0.732P0.633P0.534P0.435P0.336P0.237P0.138P0.039VCC40P2.627U2STC89C52123456789R110K+5GND+5GNDD0D1D2D3D4D5D6D7D0D1D2D3D4D5D6D7GNDR210KGND1234J1下载S1SWSPST+5GNDS1SW-PBS2SW-PBC130PC230PY112MHZGNDGNDA1K2D1LEDA1K2D2LEDR31KR41K+512345U3TN9+5GND+C310ufR410kGND+5+5GNDTN9温度传感器开始测量复位单片机LCD屏幕电源指示灯信号指示复位电路晶振排阻